中继卫星SMA系统反向链路多波束形成技术

对中继卫星SMA(S频段多址)反向链路多波束形成开环数字波束形成算法（DBF）、3种闭环自适应数字波束形成算法进行了分析，通过试验验证了开环波束形成算法和闭环波束自适应形成算法的可行性。试验结果表明，在飞行器捕获、跟踪的不同阶段，采用开环波束形成与自适应波束形成相结合是SMA反向链路波束形成的最优方式。

Multi-beam forming method for TDRSS SMA system return link

For multiple beam forming on TDRSS SMA(S-band Multiple Access) return link, an open-loop digital beam forming(DBF) algorithm and three close-loop adaptive digital beam forming algorithms are analysed. The feasibility of open-loop DBF algorithm and close-loop adaptive beamforming algorithm is verified by tests. The test results show that the combined open-loop and adaptive beam forming is the optimal means for SMA return link beam forming in different stage of capturing and tracking.